/**
 * Copyright © 2016-2023 The Thingsboard Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.thingsboard.mqtt.broker.actors.client.service.subscription;

import org.thingsboard.mqtt.broker.exception.SubscriptionTrieClearException;
import org.thingsboard.mqtt.broker.service.subscription.ClientSubscription;
import org.thingsboard.mqtt.broker.service.subscription.TopicSubscription;
import org.thingsboard.mqtt.broker.service.subscription.ValueWithTopicFilter;

import java.util.Collection;
import java.util.List;

/*
    not thread-safe for operations with the same 'clientId'
 */
public interface SubscriptionService {

    void subscribe(String clientId, Collection<TopicSubscription> topicSubscriptions);

    void unsubscribe(String clientId, Collection<String> topicFilters);

    List<ValueWithTopicFilter<ClientSubscription>> getSubscriptions(String topic);

    void clearEmptyTopicNodes() throws SubscriptionTrieClearException;

}
